Kerberos 5 Release 1.12.5

• Announcement
• README file
• Known Bugs
• Documentation
• Retrieving

Kerberos 5 Release 1.12.5 is now available

The MIT Kerberos Team announces the availability of the krb5-1.12.5 release. The detached PGP signature is available without going through the download page, if you wish to verify the authenticity of a distribution you have obtained elsewhere.

Please see the README file for a more complete list of changes.

You may also see the current full list of fixed bugs tracked in our RT bugtracking system.

DES transition

The Data Encryption Standard (DES) is widely recognized as weak. The krb5-1.7 release contains measures to encourage sites to migrate away from using single-DES cryptosystems. Among these is a configuration variable that enables "weak" enctypes, which now defaults to "false" beginning with krb5-1.8.

Major changes in 1.12.5 (2015-12-16)

This is a bugfix release. The krb5-1.12 release series has reached the end of its maintenance period, and krb5-1.12.5 is the last planned release in the krb5-1.12 series. For new deployments, installers should prefer the krb5-1.14 release series or later.

• Fix memory aliasing issues in SPNEGO and IAKERB mechanisms that could cause server crashes. [CVE-2015-2695] [CVE-2015-2696] [CVE-2015-2698]
• Fix build_principal memory bug that could cause a KDC crash. [CVE-2015-2697]
• Allow an iprop slave to receive full resyncs from KDCs running krb5-1.10 or earlier.

Major changes in 1.12.4 (2015-05-29)

This is a bugfix release. The krb5-1.12 release series is in maintenance, and for new deployments, installers should prefer the krb5-1.13 release series or later.

• Fix a minor vulnerability in krb5_read_message, which is primarily used in the BSD-derived kcmd suite of applications. [CVE-2014-5355]
• Fix a bypass of requires_preauth in KDCs that have PKINIT enabled. [CVE-2015-2694]
• Fix some issues with the LDAP KDC database back end.
• Fix an iteration-related memory leak in the DB2 KDC database back end.
• Fix issues with some less-used kadm5.acl functionality.
• Improve documentation.

Major changes in 1.12.3 (2015-02-18)

This is a bugfix release. The krb5-1.12 release series is in maintenance, and for new deployments, installers should prefer the krb5-1.13 release series or later.

• Fix multiple vulnerabilities in the LDAP KDC back end. [CVE-2014-5354] [CVE-2014-5353]
• Fix multiple kadmind vulnerabilities, some of which are based in the gssrpc library. [CVE-2014-5352 CVE-2014-5352 CVE-2014-9421 CVE-2014-9422 CVE-2014-9423]

Major changes in 1.12.2 (2014-08-11)

• Work around a gcc optimizer bug that could cause DB2 KDC database operations to spin in an infinite loop
• Fix a backward compatibility problem with the LDAP KDB schema that could prevent krb5-1.11 and later from decoding entries created by krb5-1.6.
• Avoid an infinite loop under some circumstances when the GSS mechglue loads a dynamic mechanism.
• Fix krb5kdc argument parsing so "-w" and "-r" options work together reliably.
• Handle certain invalid RFC 1964 GSS tokens correctly to avoid invalid memory reference vulnerabilities. [CVE-2014-4341 CVE-2014-4342]
• Fix memory management vulnerabilities in GSSAPI SPNEGO. [CVE-2014-4343 CVE-2014-4344]
• Fix buffer overflow vulnerability in LDAP KDB back end. [CVE-2014-4345]

Major changes in 1.12.1 (2014-01-15)

• Make KDC log service principal names more consistently during some error conditions, instead of "<unknown server>"
• Fix several bugs related to building AES-NI support on less common configurations
• Fix several bugs related to keyring credential caches

Major changes in 1.12 (2013-12-10)

Developer experience:

• Add a plugin interface to control krb5_aname_to_localname and krb5_kuserok behavior.
• Add a plugin interface to control hostname-to-realm mappings and the default realm.
• Add GSSAPI extensions for constructing MIC tokens using IOV lists.

Administrator experience:

• Principal entries may now refer to the names of policies which do not exist as policy objects in the database. Policy objects may now be deleted whether or not principals reference their names. A principal which references a nonexistent policy name will behave as if it does not reference a policy.
• Add support for having no long-term keys for a principal. This can be useful if the principal is only intended to be used with PKINIT or OTP preauthentication.
• Add collection support to the KEYRING credential cache type on Linux, and add support for persistent user keyrings and larger credentials on systems which support them.
• Add a FAST OTP preauthentication module for the KDC which uses RADIUS to validate OTP token values.
• Add an experimental pluggable interface for auditing KDC processing. This interface may change in a backwards-incompatible way in a future release.

Performance:

• The AES-based encryption types will use AES-NI instructions when possible for improved performance.

Retrieving Kerberos 5 Release 1.12.5

You may retrieve the Kerberos 5 Release 1.12.5 source from here. If you need to acquire the sources from some other distribution site, you may verify them against the detached PGP signature for krb5-1.12.5.